Hi there, does tonweb API provides get jetton balance with 1) my ton wallet's address and 2) jetton contract address?

I could find the jetton wallet class in tonweb (https://github.com/toncenter/tonweb/blob/master/src/contract/token/ft/JettonWallet.js), but I'm not sure to use this class directly or is there any endpoint like other javascript TON API